datarouter-prov/src/main/java/com/att/research/datarouter/provisioning/beans/NodeClass.java

   1 /*******************************************************************************\r
   2  * ============LICENSE_START==================================================\r
   3  * * org.onap.dmaap\r
   4  * * ===========================================================================\r
   5  * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.\r
   6  * * ===========================================================================\r
   7  * * Licensed under the Apache License, Version 2.0 (the "License");\r
   8  * * you may not use this file except in compliance with the License.\r
   9  * * You may obtain a copy of the License at\r
  10  * * \r
  11  *  *      http://www.apache.org/licenses/LICENSE-2.0\r
  12  * * \r
  13  *  * Unless required by applicable law or agreed to in writing, software\r
  14  * * distributed under the License is distributed on an "AS IS" BASIS,\r
  15  * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  16  * * See the License for the specific language governing permissions and\r
  17  * * limitations under the License.\r
  18  * * ============LICENSE_END====================================================\r
  19  * *\r
  20  * * ECOMP is a trademark and service mark of AT&T Intellectual Property.\r
  21  * *\r
  22  ******************************************************************************/\r
  23 \r
  24 package com.att.research.datarouter.provisioning.beans;\r
  25 \r
  26 import java.sql.Connection;\r
  27 import java.sql.PreparedStatement;\r
  28 import java.sql.ResultSet;\r
  29 import java.sql.SQLException;\r
  30 import java.util.Collection;\r
  31 import java.util.HashMap;\r
  32 import java.util.Map;\r
  33 import java.util.Set;\r
  34 import java.util.TreeSet;\r
  35 \r
  36 import org.apache.log4j.Logger;\r
  37 \r
  38 import com.att.research.datarouter.provisioning.utils.DB;\r
  39 \r
  40 /**\r
  41  * This class is used to aid in the mapping of node names from/to node IDs.\r
  42  *\r
  43  * @author Robert P. Eby\r
  44  * @version $Id: NodeClass.java,v 1.2 2014/01/15 16:08:43 eby Exp $\r
  45  */\r
  46 public abstract class NodeClass extends Syncable {\r
  47         private static Map<String, Integer> map;\r
  48 \r
  49         public NodeClass() {\r
  50                 // init on first use\r
  51                 if (map == null) {\r
  52                         reload();\r
  53                 }\r
  54         }\r
  55 \r
  56         /**\r
  57          * Add nodes to the NODES table, when the NODES parameter value is changed.\r
  58          * Nodes are only added to the table, they are never deleted.  The node name is normalized\r
  59          * to contain the domain (if missing).\r
  60          * @param nodes a pipe separated list of the current nodes\r
  61          */\r
  62         public static void setNodes(String[] nodes) {\r
  63                 if (map == null)\r
  64                         reload();\r
  65                 int nextid = 0;\r
  66                 for (Integer n : map.values()) {\r
  67                         if (n >= nextid)\r
  68                                 nextid = n+1;\r
  69                 }\r
  70                 // take | separated list, add domain if needed.\r
  71                 Logger intlogger = Logger.getLogger("com.att.research.datarouter.provisioning.internal");\r
  72                 for (String node : nodes) {\r
  73                         node = normalizeNodename(node);\r
  74                         if (!map.containsKey(node)) {\r
  75                                 intlogger.info("..adding "+node+" to NODES with index "+nextid);\r
  76                                 map.put(node, nextid);\r
  77                                 PreparedStatement ps = null;\r
  78                                 try {\r
  79                                         DB db = new DB();\r
  80                                         @SuppressWarnings("resource")\r
  81                                         Connection conn = db.getConnection();\r
  82                                         ps = conn.prepareStatement("insert into NODES (NODEID, NAME, ACTIVE) values (?, ?, 1)");\r
  83                                         ps.setInt(1, nextid);\r
  84                                         ps.setString(2, node);\r
  85                                         ps.execute();\r
  86                                         ps.close();\r
  87                                         db.release(conn);\r
  88                                 } catch (SQLException e) {\r
  89                                         intlogger.warn("PROV0005 doInsert: "+e.getMessage());\r
  90                                         e.printStackTrace();\r
  91                                 } finally {\r
  92                                         try {\r
  93                                                 ps.close();\r
  94                                         } catch (SQLException e) {\r
  95                                                 e.printStackTrace();\r
  96                                         }\r
  97                                 }\r
  98                                 nextid++;\r
  99                         }\r
 100                 }\r
 101         }\r
 102 \r
 103         public static void reload() {\r
 104                 Map<String, Integer> m = new HashMap<String, Integer>();\r
 105                 PreparedStatement ps = null;\r
 106                 try {\r
 107                         DB db = new DB();\r
 108                         @SuppressWarnings("resource")\r
 109                         Connection conn = db.getConnection();\r
 110                         String sql = "select NODEID, NAME from NODES";\r
 111                         ps = conn.prepareStatement(sql);\r
 112                         ResultSet rs = ps.executeQuery();\r
 113                         while (rs.next()) {\r
 114                                 int id = rs.getInt("NODEID");\r
 115                                 String name = rs.getString("NAME");\r
 116                                 m.put(name, id);\r
 117                         }\r
 118                         rs.close();\r
 119                         ps.close();\r
 120                         db.release(conn);\r
 121                 } catch (SQLException e) {\r
 122                         e.printStackTrace();\r
 123                 } finally {\r
 124                         try {\r
 125                                 ps.close();\r
 126                         } catch (SQLException e) {\r
 127                                 e.printStackTrace();\r
 128                         }\r
 129                 }\r
 130                 map = m;\r
 131         }\r
 132 \r
 133         public static Integer lookupNodeName(final String name) throws IllegalArgumentException {\r
 134                 Integer n = map.get(name);\r
 135                 if (n == null)\r
 136                         throw new IllegalArgumentException("Invalid node name: "+name);\r
 137                 return n;\r
 138         }\r
 139 \r
 140         public static Collection<String> lookupNodeNames(String patt) throws IllegalArgumentException {\r
 141                 Collection<String> coll = new TreeSet<String>();\r
 142                 final Set<String> keyset = map.keySet();\r
 143                 for (String s : patt.toLowerCase().split(",")) {\r
 144                         if (s.endsWith("*")) {\r
 145                                 s = s.substring(0, s.length()-1);\r
 146                                 for (String s2 : keyset) {\r
 147                                         if (s2.startsWith(s))\r
 148                                                 coll.add(s2);\r
 149                                 }\r
 150                         } else if (keyset.contains(s)) {\r
 151                                 coll.add(s);\r
 152                         } else if (keyset.contains(normalizeNodename(s))) {\r
 153                                 coll.add(normalizeNodename(s));\r
 154                         } else {\r
 155                                 throw new IllegalArgumentException("Invalid node name: "+s);\r
 156                         }\r
 157                 }\r
 158                 return coll;\r
 159         }\r
 160 \r
 161         protected String lookupNodeID(int n) {\r
 162                 for (String s : map.keySet()) {\r
 163                         if (map.get(s) == n)\r
 164                                 return s;\r
 165                 }\r
 166                 return null;\r
 167         }\r
 168 \r
 169         public static String normalizeNodename(String s) {\r
 170                 if (s != null && s.indexOf('.') <= 0) {\r
 171                         Parameters p = Parameters.getParameter(Parameters.PROV_DOMAIN);\r
 172                         if (p != null) {\r
 173                                 String domain = p.getValue();\r
 174                                 s += "." + domain;\r
 175                         }\r
 176                 }\r
 177                 return s.toLowerCase();\r
 178         }\r
 179 }\r